Clevis and wheel adjusting device for plows.



No. 628,748. Patented luly u, I899. .1. T. BDYLES. CLEVIS AND WHEELADJUSTING DEVICE FOR FLOWS.

(Application filed. Mar. 21, 1899.)

No Model.)

rew/for? ment of said lever.

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JAMES T. BOYLES, OF MABTINSBURG, \VEST VIRGIN-IA.

CLEVlS AND WHEEL ADJUSTING DEV ICE FOR PLOWS.

SPECIFICATION forming part of Letters Patent No. 628,748, dated July 11,1899.

Application filed March 21, 1899. Serial No. 709,997. (No model.)

To all whom it may concern:

Be it known that 1, JAMES T. BoYLns, a citizen of the United States,residing at Martinsburg, in the county of Berkeley and State of \VestVirginia, have invented new and useful Improvements in Clevis and WheelAdjusting Devices for Plows, of which the following is a specification.

My invention relates to clevis and wheel adjusting devices for plows,and has for its object to provide a simple and efficient lever mechanismfor simultaneous adjustment of the clevis and wheel-standard of plowsand other agricultural implements.

The invention is illustrated in the annexed drawings, in which- Figure lis a side elevation of a plow provided with my improved lever mechanismfor simultaneous adjustment of the clevis and wheel-standard. Fig. 2 isa plan view of the invention.

As shown in the drawings, the referencenumeral 1 designates the beam ofa plow or other agricultural machine, and 2 a clevis provided with arms3,pivotally attached to opposite sides of said beam. A wheel-standard4:, of segmental or yoke form, is pivoted at its forward end to one sideof the plow-beam, and in the rear arm of this standard there is asegmental slot 5 for engaging a guide-pin 6 on one side of the beam. Thewheel 7 is journaled to the lower curved portion of the standard.

To one side of the beam there is pivoted a lever 8 for adjusting boththe clevis 2 and wheel-standard 4 according to requirements and so thatthe clevis and wheel-standard will be made adjustable together by asingle mo ve- This lever 8 has its fulcrum 9 intermediate its ends, asshown. The forward end of the lever 8 carries a pair of toggle-links 10,one of which pivotally connects with a lever 11, that is rigidlyattached to one of the pivotal clevis-arms 3, or may be integraltherewith. The other link 10 pivotally connects with one arm of aleverl2,which is pivoted to the side of the beam 1 and hasv its otherarm connected by a link 13 to the segmental wheel-standard 4c in orderto permit adjustment of the same simultaneously with adjustment of theclevis. The handle end of the main lever 8 is provided with aspring-pressed latching-pawl 1 L to normally engage a rack 15 on thebeam 1, and thus hold the lever mechanism and the connected clevis andwheel-standard in'any position to which they have been simultaneouslyadjusted by operation of said lever mechanism.

It will be observed that a single throw of "the lever 8 in a properdirection will raise or lower the wheel-standard 4 and attached wheel 7,as may be desired, and at the same time will impart a reciprocal adjustmentto the clevis 2, so as to maintain a proper draftto accord withthe required depth of cut for the plow or other cultivating attachment.

The simultaneous adjustment of the clevis and wheel standard isextremely useful with many agricultural implements, and theherein-described lever mechanism provides a very simple, efficient, andready means for accomplishment of the desired adjustment.

hat I claim as in y invention is 1. The combination with a plow-beam, ofa wheel-carrying standard pivoted to the beam, a clevis also pivoted tosaid beam and having an attached, rearwardly-extending lever, and apivoted, main operating-lever having connections with saidrearwardly-extending lever of the clevis and with said Wheel-carryingstandard, for simultaneously swinging them on their pivotal attachments,substan tially as described.

2. The combination with a clevis, a wheelstandard and a beam to whichsaid clevis and standard are pivotally attached, of a lever fulcrumed onthe beam and carrying a pair of toggle-links, a lever connecting one ofsaid links with the pivoted clevis, and lever mechanism connecting theother one of said links with the pivotal wheel-standard,whereby theclevis and wheel-standard are made simultaneously adjustable,substantially as described.

3. The combination with the beam, the adjustable clevis, and theadjustable wheelstandard, of a main lever fulcrumed inter- In testimonywhereof I have hereunto set mediate its ends on said beam, a pair oftogmy hand in presence of two subscribing wit- 1o gle-links carried bysaid main lever, a lever nesses. connecting one of said links with theclevis,

lever devices connecting the other link with the wheel-standard, alatching-pawl 0n the WVitnesses:

JAMES T.- BOYLES.

main lever, anda rack to be engaged by said L. W; ROBINSON,

pawl, substantially as described. JOHN W. DODD.

